[ Eyebrow raise? But if he's a sea-monster from the land, wouldn't that make him a land monster? In fact, given how much he seems to loathe the ocean and not know much about other sea-life, she has to wonder what exactly makes him a sea-monster in the first place.

There's a flicker of an idea that maybe, possibly, he could be lying - but Webby's inherent trust in folks and sheer positive nature makes sure that flicker dies in less than a second. ]

Well, considering this place is composed of mostly human and human-looking like species, you should fit in perfectly! I wouldn't have thought you were a sea-monster if you hadn't told me.